Log In Log In  |  Checkout   |  43 item(s)
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 706, Membrane Filter Casing Housing Assembly
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x UU Clips Pair from Bracket to Membrane Filter
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x KT-103, Optional Manual Membrane Flush Valve
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)

View Cart$1,607.95
Specials Log InCreate Account Checkout  Shopping Cart43 item(s)
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 706, Membrane Filter Casing Housing Assembly
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x UU Clips Pair from Bracket to Membrane Filter
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x KT-103, Optional Manual Membrane Flush Valve
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)

View Cart$1,607.95

ATU TEE Union Connector Quick Connect QC Fitting [ATU]

$3.50

ATU TEE Union Connector Quick Connect QC Fitting



* ATU TEE Union Connector, Quick Connect

* Please choose size from the selection box below. Both numbers are tubing OD Outside Diameter. First number is Tee double side and second number is the single side. (Pipe sizes can be confusing even for the experienced user. Pipe size is not the actual outside or inside diameter of the pipe but is the industry accepted designation. If you have any question please email us first.)
* 1/4" Tube OD x 1/4" Tube OD ATU0404
* 3/8" Tube OD x 1/4" Tube OD ATU0604
* 3/8" Tube OD x 3/8" Tube OD ATU0606
* 1/2" Tube OD x 3/8" Tube OD ATU0706
* 1/2" Tube OD x 1/2" Tube OD ATU0707


* Water & foods use: Products are manufactured from safe, non-toxic materials meeting the requirements of the US FDA, ERAS, ANSI/NSF-51,61, and SK Zert. Our products are widely used in water purification, food/beverage, and pneumatic systems.

* Function & Quality: Provides quick and convenient assembly-saving time & expense.

* Collet Design: Our unique oval collet design is superior and more practical, and is an improvement welcomed by our world wide customers in all industries.

* Additional Applications: Beyond water and food use, fittings can be used with air, gases, vacuum, & liquids. All connections can be assembled & disassembled repeatedly. A broad range of sizes covers a broad scope of applications.

* We carry different fittings in variation of sizes: 1/4", 3/8", or 1/2" adapters, connectors, fittings, or valves.  Most are not listed online, to avoid confusion to majority of RO system customers.  

* Send us a message with specification, intended application, and image of your setup or old fitting  to check if we have what you need. 

Available Options:

Size Combination:

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